@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/306a3b5f-e1dd-457f-87f1-293998ce9e0a> a dcat:Dataset ;
    dct:description "Airborne gravity data for Michigan, Wisconsin, Illinois, Indiana, and Lake Michigan collected in 2011 to 2013 over 3 surveys. This data set is part of the Gravity for the Re-definition of the American Vertical Datum (GRAV-D) project initiated by NOAA's National Geodetic Survey to collect and monitor gravity data suitable for the re-definition of the vertical datum for at least the United States and territories. The data is available at http://www.ngs.noaa.gov/GRAV-D/data_en03.shtml in ASCII text format." ;
    dct:identifier "Airborne Gravity: NGS' Gravity Data for EN03 (2011-2013)" ;
    dct:issued "2025-11-20T19:04:40.009677"^^xsd:dateTime ;
    dct:language "{en-US}" ;
    dct:modified "2013-09-01"^^xsd:date ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-99.0000 25.4000, -95.5000 25.4000, -95.5000 31.6000, -99.0000 31.6000, -99.0000 25.4000))"^^gsp:wktLiteral ] ;
    dct:title "Airborne Gravity: NGS' Gravity Data for EN03 (2011-2013)" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "NOAA's National Geodetic Survey" ;
            vcard:hasEmail <mailto:ngs.infocenter@noaa.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/306a3b5f-e1dd-457f-87f1-293998ce9e0a/resource/1191d327-84cd-4216-ae6f-3532a5b8bc55>,
        <https://data.amerigeoss.org/dataset/306a3b5f-e1dd-457f-87f1-293998ce9e0a/resource/2c02c1e0-aa0f-4fcb-bb27-7eb5c7616eeb>,
        <https://data.amerigeoss.org/dataset/306a3b5f-e1dd-457f-87f1-293998ce9e0a/resource/6d188754-f624-4f42-aa63-c9423d038278> ;
    dcat:keyword "airborne-gravity",
        "amerigeo",
        "amerigeoss",
        "ckan",
        "data-center-government-agencies-u-s-federal-agencies-doc-noaa-nos-ngs-national-geodetic-survey",
        "datum",
        "doc-noaa-nesdis-ngdc-national-geophysical-data-center",
        "earth-science-atmosphere-altitude-geopotential-height",
        "earth-science-oceans-marine-geophysics-marine-gravity-field",
        "earth-science-solid-earth-geodetics-gravity-geoid-properties",
        "earth-science-solid-earth-geodetics-gravity-gravitation-field",
        "earth-science-solid-earth-geodetics-gravity-gravity",
        "ellipsoid-height",
        "geo",
        "geodetic",
        "geodetic-global-positioning",
        "geoid",
        "geophysical",
        "geoss",
        "ggos",
        "global-earth-observation-system-of-systems",
        "global-geodetic-observing-system",
        "gravity",
        "height-modernization",
        "instrument-insitu-laboratory-instruments-gps-receivers",
        "instrument-insitu-laboratory-instruments-gravimeters",
        "instrument-insitu-laboratory-instruments-inertial-measurement-units",
        "instrument-insitu-laboratory-instruments-lrgm-lacoste-romberg-gravity-meter",
        "location-continent-north-america-united-states-of-america",
        "location-continent-north-america-united-states-of-america-illinois",
        "location-continent-north-america-united-states-of-america-indiana",
        "location-continent-north-america-united-states-of-america-michigan",
        "location-continent-north-america-united-states-of-america-wisconsin",
        "location-great-lake-lake-michigan",
        "national",
        "national-ocean-service",
        "national-spatial-reference-system",
        "navd88",
        "nesdis",
        "noaa",
        "north-america",
        "north-american-vertical-datum-of-1988",
        "nsrs",
        "orthometric-height",
        "platform-aircraft-pilatus-pc-12",
        "platform-aircraft-turbo-commander-1000",
        "platform-earth-observation-satellites-envisat",
        "platform-earth-observation-satellites-ers1",
        "platform-earth-observation-satellites-ers2",
        "platform-earth-observation-satellites-goce-gravity-field-and-steady-state-ocean-circulation-exp",
        "platform-earth-observation-satellites-gps-global-positioning-system-satellites",
        "platform-earth-observation-satellites-grace-gravity-recovery-and-climate-experiment",
        "platform-earth-observation-satellites-jason-1",
        "platform-earth-observation-satellites-jason-2",
        "platform-earth-observation-satellites-topex-poseidion",
        "platform-in-situ-land-based-platform-ground-based-observations",
        "spatial-reference",
        "u-s-department-of-commerce",
        "united-states",
        "vertical" .

<https://data.amerigeoss.org/dataset/306a3b5f-e1dd-457f-87f1-293998ce9e0a/resource/1191d327-84cd-4216-ae6f-3532a5b8bc55> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:13:23.444680"^^xsd:dateTime ;
    dct:modified "2025-11-20T19:04:39.982282"^^xsd:dateTime ;
    dct:title "Web Page" ;
    dcat:accessURL <http://www.ngs.noaa.gov/> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/306a3b5f-e1dd-457f-87f1-293998ce9e0a/resource/2c02c1e0-aa0f-4fcb-bb27-7eb5c7616eeb> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:13:23.444665"^^xsd:dateTime ;
    dct:modified "2025-11-20T19:04:39.981469"^^xsd:dateTime ;
    dct:title "Web Page" ;
    dcat:accessURL <http://www.ngs.noaa.gov/GRAV-D/data_en03.shtml> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/306a3b5f-e1dd-457f-87f1-293998ce9e0a/resource/6d188754-f624-4f42-aa63-c9423d038278> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:13:23.444675"^^xsd:dateTime ;
    dct:modified "2025-11-20T19:04:39.981874"^^xsd:dateTime ;
    dct:title "Web Page" ;
    dcat:accessURL <http://www.ngs.noaa.gov/GRAV-D/data_products.shtml> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .